Siemens Aktiengesellschaft

Varian Medical Systems International Ag

Ziehm Imaging Gmbh

Varian Medical Systems, Inc.

Friedrich-alexander-universitaet Erlangen-nuernberg

Klinikum Mannheim Gmbh Universitätsklinikum Medizinische

Fakultät Mannheim Der Universität Heidelberg

Deutsches Krebsforschungszentrum

Siemens Healthineers International Ag

Friedrich-Alexander-Universitat Erlangen-Nürnberg

Werth Messtechnik Gmbh

Klinikum Mannheim Gmbh Universitätsklinikum Medizinische Fakultät Mannheim Der Ruprechts-karls-universität Heidelberg

Marc Kachelriess

Klaus Hörndler

Thomas König

Marcus Brehm

Michael Knaup

Thomas Flohr

Herbert Bruder

Karl Stierstorfer

Rainer Raupach

Corey Zankowski

Ralf Christoph

Patrik Kunz

Stefan Schaller

Pascal Paysan

Ingomar Schmidt

Markus Oelhafen

Timo Berkus

Matthias Baer-Beck

Esther Meyer

Wolfgang Rauh

Michael Hammer

Tim Vöth

Jan Kuntz

Soenke Bartling

Corey E Zankowski

Tristan Schubert

Sönke Bartling

Methods for operating a medical imaging device for positionally correct representation of non-anatomical structures during an imaging examination may include providing a first 3D image containing at least one anatomical structure, extracting at least one anatomical model from the at least one anatomical structure, providing 2D update images recorded at different times, extracting non-anatomical and anatomical structures from subsets of the update images, calculating a non-anatomical 3D image from at least two partial reconstructions based on the extracted non-anatomical structures, reconstructing an anatomical 3D image based on the extracted anatomical structures, registering the anatomical 3D image with the first 3D image by determining a coordinate transformation, and creating a navigation volume from the anatomical model and the non-anatomical 3D image using the coordinate transformation.

Method and device for operating a medical imaging device for the positionally correct representation of non-anatomical structures during an imaging examination

Medical imaging methods for processing a three-dimensional (3D) image data set with two-dimensional X-ray images from an X-ray machine using a target function. Methods can include providing a 3D image data set of at least one examination zone in which anatomical structures are present, segmenting the image data set to provide a 3D vascular structure model and a 3D bone structure model, recording a first two-dimensional (2D) X-ray image containing at least a portion of the vascular structure and at least a portion of the bone structure, recording a second 2D X-ray image of the examination zone at a different contrast agent concentration, and subtracting the first and second 2D X-ray images to generate a subtraction image. An optimum projective geometry may then be determined using a three-part target function based on the 3D image data and the 2D X-ray images.

Method for superimposing a two-dimensional X-ray image on projective images of three-dimensional structures

An imaging method for radiologically guiding an instrument during medical interventions on an object is disclosed. First, a prior volumetric image of the object is provided, followed by periodically providing a current volumetric image on-the-fly during the intervention to an operator by measuring an undersampled set of projections of the object and reconstructing the current image based on changes between the prior volumetric image or an updated prior image and the undersampled set of projections. The method and corresponding system are used for radiologically guiding medical interventions on an object. The system includes a first image provider, an imaging apparatus for measuring undersampled sets of projections, and a processor. The processor communicates with the imaging apparatus for providing updated images on-the-fly during the intervention by reconstructing the updated image based on changes between the first image or an update of the first image and the undersampled sets of projections.

Method and system for 4D radiological intervention guidance (4D-cath)

An apparatus includes: an input configured to receive a plurality of images, wherein the images include respective sub-images of a bodily part of a subject, and wherein a position of the bodily part relates to a breathing movement and a cardiac movement of the subject; a first registration engine configured to determine a first registration of at least two breathing correlated images, wherein the at least two breathing correlated images comprise two of the plurality of images or are derived from at least some of the plurality of images; a second registration engine configured to determine a second registration of at least two cardiac correlated images; and a volumetric image generator configured to generate a volumetric image using the first registration and the second registration.

5D cone beam CT using deformable registration

A method of obtaining a volumetric image includes obtaining a plurality of volumetric images, the volumetric images generated using respective sets of projection images, wherein the volumetric images and the respective sets of projection images correspond with different respective bins for a physiological cycle, and determining an additional volumetric image using one or more of the projection images from each of the sets that correspond with the different respective bins for the physiological cycle, wherein the act of determining the additional volumetric image is performed using a processor.

4D cone beam CT using deformable registration

A method is disclosed for reducing metal artifacts in CT image datasets. An embodiment of the method includes reconstructing a first CT image dataset with and a second CT image dataset without metal artifact correction, weighted summation of a high-pass-filtered first and a high-pass-filtered second CT image dataset plus a low-pass-filtered second CT image dataset, wherein the weightings are dependent on the proximity to metal in the CT image datasets. A computing unit, a CT system and a C-arm system designed to execute the method are also disclosed.

Method, computing unit, CT system and C-arm system for reducing metal artifacts in CT image datasets

In a method for computed tomography and a computed tomography apparatus for scanning a subject with a conical ray beam emanating from a focus that detects a matrix-like detector array, the focus is moved relative to the subject on a spiral path around a system axis, and the detector array supplies output data corresponding to the incident radiation, and images having an inclined image plane are reconstructed from output data respectively supplied during the movement of the focus on a spiral segment, the image planes of these images are inclined by an inclination angle &#x3b3; around a first axis intersecting the system axis at a right angle and also are inclined by a tilt angle &#x3b4; with respect to the system axis around a second axis that intersects the first axis as well as the system axis at a right angle.

Method and apparatus for spiral scan computed tomography

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Nuremberg, Germany

Marc Kachelriess